What is microchannel heat sink?
Microchannel heat sink (MCHS) is an advanced cooling technique to fulfil the cooling demand for electronic devices installed with high-power integrated circuit packages (microchips). Various microchannel designs have been innovated to improve the heat transfer performance in an MCHS.
What is the best material for a heat sink?
Aluminum alloys
Heat sinks are designed to maximize the surface area in contact with the coolant fluid. Aluminum alloys are the most common heat sink material. This is because aluminum costs less than copper. However copper is used where higher levels of thermal conductivity are needed.
Which metal is generally used in heat sink?
The most common heat sink materials are aluminium alloys. Aluminium alloy 1050 has one of the higher thermal conductivity values at 229 W/(m·K) and heat capacity of 922 J/(kg·K), but is mechanically soft.
What is microchannel heat exchanger?
Introducing Microchannel Heat Exchangers (MCHEs) MCHEs are a variation of fin and tube heat exchangers. At least one fluid, usually refrigerant or water, flows through tubes or enclosed channels while air flows cross-current through the connected fins. The hydraulic diameter of the channels is less than 1 mm.
Why are microchannels important?
Micro-channels play an important role in development of small scale fluid flow devices and are one of the essential parts of micromachined fluid systems.
Is copper a good heat sink?
A Copper Heatsink is sometimes used as a heatsink as it is a good conductor of heat. This can be observed if you heat one end of a piece of copper, the other end will quickly reach the same temperature. Copper is used in many heating applications because it doesn’t corrode and has a high melting point.
Is copper a good heat conductor?
Copper is yet another good conductor of heat because it absorbs heat quickly and holds it for a long period of time. Besides this, copper is also corrosion-resistant. Because of its versatility, copper is often found in cookware, computers, and heating systems.
What is microchannel device?
Microchannel in microtechnology is a channel with a hydraulic diameter below 1 mm. Microchannels are used in fluid control (see Microfluidics) and heat transfer (see Micro heat exchanger). They suggested an effective method for designing microchannels in the laminar and fully developed flow.
How does a microchannel plate work?
The microchannel plate functions as a particle amplifier, turning a single impinging particle into a cloud of electrons. By applying a strong electric field across the MCP, each individual microchannel becomes a continuous-dynode electron multiplier.
What is a micro-channel heat sink?
The micro-channel heat sink is a copper plate containing numerous grooves 231 microns wide or about three times as wide as a human hair and 713 microns deep. Figure 10 [5] shows Purdue researchers testing their microchannel heat sinks.
What is testsection heat sink?
Test section was a heat sink equipped with 7 micro-channels with rectangular cross section created on the top of the heat sink, which is placed inside a Polydimethylsiloxane (PDMS) cubic cover with insulation thickness of 10 mm.
What is the best coolant for a microchannel heat sink?
To achieve this, air, water or ethylene glycol has been recognized to be a suitable coolant for microchannel heat sinks.
Can a rectangular microchannel be used as a heat exchange medium?
A rectangular microchannel was used as a heat exchanging medium. ∼900% enhancement in Heat transfer coefficient compared to water was achieved. Liquid indium nanofluid was more suitable for high temperature applications. Penalty for pressure drop in peristaltic flow of CuO/indium was registered.